OPERATION | ||
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FIGURE B.1 – LOADING A 50 OR 60 LB COIL.
e. Press the gun trigger and push the electrode until it just enters the drive roll.
SPINNER
NUT 
COVER
PLATE
COIL
REEL
SLOTS
CARDBOARD COIL LINER
TIE WIRE
SPRING
LOADED
ARM
WARNING
When inching with gun trigger, the electrode and drive mechanism are always “hot” to work and ground.
f. Inch the electrode through the gun.
IDLE ROLL PRESSURE SETTING
The idle roll pressure is set at the factory backed out two turns from full pressure. This is an approximate setting. The optimum idle roll setting can be determined as follows:
1. | Press end of gun against a solid object that is |
| electrically isolated from the welder output. Press |
| the gun trigger for several seconds. |
2. | If the wire “birdnests,” jams or breaks at the drive |
| roll, the idle roll pressure is too great. Back the |
| pressure setting out 1⁄2 turn, run new wire through |
| gun, and repeat above steps. |
3. | If the only result is drive roll slippage, shut off the |
| power source, then loosen the gun cable |
| clamping screw in the gearbox conductor block |
| and pull the gun cable forward about six inches. |
LOADING WIRE DRIVE
a. Turn the reel or spool until the free end of the electrode is accessible.
b. While tightly holding the electrode, cut off the bent end and straighten the first six inches. Cut off the first inch . (If the electrode is not properly straightened, it may not feed or may not go into the outgoing guide tube causing a “birdnest”.)
c. Insert the free end through the incoming guide tube to the drive roll.
d. Turn on the welding power source.
WARNING
The electrode circuit is electrically “hot” when the power source is on.
There should be a slight waviness in the exposed |
wire. If there is no waviness, the pressure is too |
low. Increase the pressure setting 1⁄4 turn, lock the |
gun cable in place and repeat the above steps. |